Preheat oven to 350 degrees.
For Streusel-Grease a 9" or 10" tube pan or spray with nonstick cooking spray.
In a medium size bowl combine brown sugar, pears, pecans, flour and cinnamon.
Stir in melted butter.
For making the cake-In a medium size bowl combine flour, baking powder and baking soda: mix well.
In a large bowl using an electric mixer set on medium speed, beat butter and sugar until fluffy. Add eggs one at a time: beat well after each addition.
Add vanilla.
Set mixer speed to low and alternately beat flour mixture and orange juice into egg mixture.
Spoon half of the batter into tube pan and spread evenly.
Sprinkle with half of streusel and pour warmed pepper jelly on top making a thin jelly layer then spoon the remaining batter over streusel, spreading to make an even layer.
Swirl batter with a knife to create a marbled pattern.
Bake for 30-35 minutes or until toothpick inserted in center comes out clean.
Remove cake from oven: bake until toothpick inserted in center comes out clean, about 30-35 minutes.
Transfer to cooling tray.
Making the glaze-Combine confectioners sugar and orange juice.
Mix well.
Turn cake out onto a serving plate: invert streusel is on top
Drizzle glaze over cake: Serve. Yummy!